because the interface involves cross-domain problems, nearly 600ms per interface request is a waste of time for OPTIONS requests. How to optimize this process, for example, nginx configuration returns directly across domains without program processing (php)
Cross-domain also follow the ngx? of your local domain Or is your local ngx acting as a cross-domain proxy?
< hr >ngx setting:
if ($request_method = OPTIONS ) {
add_header Access-Control-Allow-Origin "*";
add_header Access-Control-Allow-Methods "POST, GET, PUT, OPTIONS, DELETE";
add_header Access-Control-Max-Age "3600";
add_header Access-Control-Allow-Headers "Origin, X-Requested-With, Content-Type, Accept, Authorization";
add_header Content-Length 0;
add_header Content-Type text/plain;
return 200;
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